Ambipolar circuits for analog, mixed-signal, and radio-frequency applications

This paper describes the circuit design of a polarity controllable triple-mode amplifier based on ambipolar graphene field-effect transistors for analog, mixed-signal, and radio frequency (AMS/RF) applications. We describe how such polarity controllable circuits can greatly simplify circuits for applications such as phase shift keying and phase detection in the AMS/RF space, with the potential to realize higher bandwidth and frequency as well as lower power consumption over conventional circuits based on state-of-the-art technology. This paper emphasizes the theoretical analysis and performance optimization of these circuits, which have been independently fabricated and validated in our experiments.